
In a bowl, combine all dressing ingredients. Set aside.
Marinate chicken breasts for 2 hours with 75 ml (1/3 cup) of the dressing.
Preheat the oven to 400°F (200°C). Bake breasts for about 15 minutes.
Meanwhile, fry the sliced leeks in the butter for 5 minutes. Set aside.
Place the rack in the centre of the oven. Preheat the oven to 425°F (220°C). Line a baking plate with parchment paper.
Divide the chicken, leeks, tomatoes and cheese among the bread Naans.
Place on a baking sheet and bake for 10 to 12 minutes or until the cheese is lightly browned. Add arugula and dressing to the pizza to taste.

1 package of sliced leeks contains the equivalent of 2 whole leeks.
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